Não informado. (2001). Astronautics information. California Institute of Technology.
Chicago (17e ed.) BronvermeldingNão informado. Astronautics Information. Pasadena, Calif: California Institute of Technology, 2001.
MLA (8e ed.) BronvermeldingNão informado. Astronautics Information. California Institute of Technology, 2001.
Let op: Deze citaties zijn niet altijd 100% accuraat.